X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 08 May 2007 23:44:32 -0400 Message-ID: X-Original-Return-Path: Received: from [64.12.137.3] (HELO imo-m22.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2033249 for lml@lancaironline.net; Tue, 08 May 2007 23:17:24 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.3; envelope-from=VTAILJEFF@aol.com Received: from VTAILJEFF@aol.com by imo-m22.mx.aol.com (mail_out_v38_r9.2.) id q.cc3.f21c739 (52373) for ; Tue, 8 May 2007 23:16:17 -0400 (EDT) Received: from WEBMAIL-RB10 (webmail-rb10.webmail.aol.com [152.163.16.74]) by ciaaol-m02.mx.aol.com (v115.11) with ESMTP id MAILCIAAOLM027-cc9546413d0128a; Tue, 08 May 2007 23:16:17 -0400 References: X-Original-To: lml@lancaironline.net Subject: Re: [LML] Re: Why is there fuel? X-Original-Date: Tue, 08 May 2007 23:16:18 -0400 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: vtailjeff@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8C95FFF8B55032E_854_8888_WEBMAIL-RB10.sysops.aol.com" X-Mailer: AOL WebMail 25698 Received: from 10.6.193.175 by WEBMAIL-RB10.sysops.aol.com (152.163.16.74) with HTTP (WebMailUI); Tue, 08 May 2007 23:16:18 -0400 X-Original-Message-Id: <8C95FFF8B55032E-854-489F@WEBMAIL-RB10.sysops.aol.com> X-AOL-IP: 152.163.16.74 X-Spam-Flag: NO ----------MB_8C95FFF8B55032E_854_8888_WEBMAIL-RB10.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" your fuel selector is likely sucking air.=20 =20 -----Original Message----- From: bu131@swbell.net To: lml@lancaironline.net Sent: Tue, 8 May 2007 8:31 AM Subject: [LML] Re: Why is there fuel? my IV-P will quit any time over 14,000 feet (at that altitude i always have=20= the low fuel pump on) unless momentarily and for 3 seconds before switching=20= tanks i turn the high fuel pump on, the short surge at 23,000 feet is scary=20= when the engine quits and everything goes dead, the fuel mixture gets messed= up and for a couple of seconds the engine gets very leannnnnnnnnnnnnnnnnnn andres Kevin Stallard wrote: Hi all, =20 Actually the question really is, why does the IO-550 require an electric fue= l pump (besides priming/starting)? =20 =20 Why is there both a low boost and high boost pump? Is this only for backup= , or are there more sinister aspects of fuel delivery in the IO-550 at play=20= here? In talking with a friend of mine, he mentions that the Lycoming io360= only has a low pressure fuel pump. =20 I remember a discussion about the TIO-550 and the fuel pump needs to be turn= ed on above 10,000 feet. Why is this? This person I=E2=80=99ve been speak= ing to about this seemed to think it was to overcome vapor lock. Why doesn= =E2=80=99t the IO-360 need something like this? Does the IO-550 need to be=20= treated in the same way? =20 Thanks Kevin =20 =20 =20 ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com. ----------MB_8C95FFF8B55032E_854_8888_WEBMAIL-RB10.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

your fuel selector is likely sucking air.

-----Original Message-----
From: bu131@swbell.net
To: lml@lancaironline.net
Sent: Tue, 8 May 2007 8:31 AM
Subject: [LML] Re: Why is there fuel?

my IV-P will quit any time over 14,000 feet (at that altitude i always=20= have the low fuel pump on) unless momentarily and for 3 seconds before switc= hing tanks i turn the high fuel pump on, the short surge at 23,000 feet is s= cary when the engine quits and everything goes dead, the fuel mixture gets m= essed up and for a couple of seconds the engine gets very leannnnnnnnnnnnnnn= nnnn

andres

Kevin Stallard <Kevin@arilabs.net> wrote:

Hi all,

Actually the question really is, why does the IO-= 550 require an electric fuel pump (besides priming/starting)? <= /FONT>

Why is there both a low boost and high boost pump= ? Is this only for backup, or are there more sinister aspects of= fuel delivery in the IO-550 at play here? In talking with a friend of= mine, he mentions that the Lycoming io360 only has a low pressure fuel pump= .

I remember a discussion about the TIO-550 and the= fuel pump needs to be turned on above 10,000 feet. Why is this?= This person I=E2=80=99ve been speaking to about this seemed to think=20= it was to overcome vapor lock. Why doesn=E2=80=99t the IO-360 need som= ething like this? Does the IO-550 need to be treated in the same way?<= /SPAN>

Thanks

Kevin

AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com.

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